Effect of Al₂O₃ Nano Particle Addition on Mechanical Properties and Creep Behaviour of High Pressure Die Cast AZ91-1Sr Alloy

ABSTRACT

The AZ91-1Sr alloy, the 0.5, 1 and 2 vol.% Al₂O₃/AZ91-1Sr nanocomposites were fabricated by high pressure die casting method and investigated the effect of nano Al₂O₃ particles on the mechanical properties and creep behaviour of the AZ91-1Sr alloy. Mechanical and creep tests disclosed remarkable enhancements in the yield strength, tensile strength, hardness and creep resistance of the AZ91-1Sr alloy with addition of nano Al₂O₃ particles. The best results were obtained in the case of the addition of 2 vol.% Al₂O₃ nano particles.

KEYWORDS:

• Mg-Al nanocomposite
• Al₂O₃
• hardness
• tensile strength
• creep behaviour
• activation energy

Acknowledgements

The authors wish to thank TUBITAK Project Unit (grant no:116M534) for financial support in this study.

Disclosure statement

No potential conflict of interest was reported by the author(s).